Hi All!
The Canon EOS 40D and EOS 1Ds Mark III White Papers are out!
You can find and download these PDF documents from a.o. The-Digital-Picture.com, a truely great Canon-dedicated hardware & review site (and some great images, too!) run by Mr. Bryan Carnathan.
Direct Link to the EOS 40D White Paper
Direct Link to the EOS 1Ds Mark III White Paper
And for those of you unfamiliar with the White Papers:
The White Papers are Canon USA-issued commercial documents, released under the authority of Mr. Canon-USA, the honourable Mr. Chuck Westfall

, and they describe the new camerabody, what has changed, how to operate, who is it made for (!), how does it fit into the EOS system, etc.
In these documents you can find several 'deep' technical information bits
never found in Previews, Reviews and such. IMHO they are a
MUST-READ for any serious potential buyer
Hope they will enlighten you and answer your questions: if not: try this forum
With my kindest regards and respects,
Max@Home